Gem-setting.



L. MORSE.

GEM SETTING.

APPLICATION FILED JUNE 25, 1906.

1 1 92,092. Patented July 25, 1916.

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UNITED STATES PATENT OFFICE. j

LEWIS MORSE, OF NORTH ATTLEIBORO, MASSACHUSETTS, ASSIGNOR T0 H. D.MERRITT COMPANY, OF NORTH ATTLEBORO, MASSACHUSETTS, A CORPORATION OFRHODE ISLAND.

GEM-SETTING.

Application filed June 25, 1906.

To all whom it may concern:

Be it known that I, Lnwrs Moms, of North Attleboro, in the county ofBristol and State of Massachusetts, have invented certain new and usefulImprovements in Gem-Settings; and I do hereby declare, the followingspecification, takenin connection with the accompanying drawings,forming a part of the same, to be a full, clear, and exact descriptionthereof. I

The invention relates to a gem setting formed complete in a single piecefrom a bar of stock and with the body of the setting and the clampingprongs integral with each other.

The invention consists primarily in a gemsetting of the characterreferred to made from a bar of stock preferably square in cross-sectionor substantially so, and formed with a groove or channel lengthwise ofsaid bar along one side thereof, and with the projecting flanges thusformed, cross-cut to form the clamping prongs.

The invention further consists in certain features hereinafter describedand claimed.

Referring to the drawings, Figure l is a perspective view of the blankor bar of stock from which the settting is formed; Fig. 2 ,is acorresponding view showing the longitudinal groove or channel formed inone side of the bar; Fig. 3 is a perspective view, Fig. 4: a plan viewand Fig. 5 a cross section of the bar after the cross-cuts have beenmade; Fig. 6 is a perspective view of a bar of stock having a series oflongitudinal grooves or channels formed therein; and Fig. 7 is a planview of the setting as formed therefrom. a

In making the setting I employ a bar of stock 1 substantially square incross section, except that preferably the bar is rounded off somewhat atthe corners, as shown in Fig. 1. In one side of this bar I form bycutting, rolling or otherwise, a groove or channel 2 extendinglengthwise of said bar, thereby forming the projecting flanges 3, 3, theremainder of the bar constituting the body portion 4 of the setting, asshown in Fig. 2. Then by means of a saw, bur, or other suitable tool Icross-cut the flanges 3, and thereby form two series of clamping prongs5 projecting from the body portion 4, one series of said prongsprojecting from said body portion along each edge thereof, as shown inFig. 3. As will be seen, there will Specification of Letters Patent.

Patented J lily 25, 1916. Serial No. 323,221.

thus be formed four prongs for holding each stone. While the cross-cutsmay be made separately, or one at a time, it is preferred to employ aseries or gang of cutting tools arranged to operate simultaneously uponthe stock, and thus make a correspondmg number of the cross-cutssimultaneously. Preferably the prongs 5 are to be made 1n pears and withonly a comparatively nar row space between the two prongs comprismg eachpair, as shown in Fig. 3, and so as to thus bring adjacent gems orstones correspondingly close together. In order to do this, all that isnecessary is to make up the gang of cross-cut tools accordingly, thatis, with a. number of narrow face tools and a number of wide face toolsarranged alternately in the gang, and so that the narrow face tools willmake the narrow cuts 6 and the wide face tools will make the wider cuts7.

When the gems or stones to be set have conical or pointed backs, thesetting is to be further provided with the series of countersunkrecesses 8, which recesses may be produced by drilling, rolling, or inany other suitable manner. When these recesses are formed by drilling aseries or gang'of drills may be employed whereby a corresponding numberof said recesses may be formed simultaneously.

If desired a setting adapted to receive several rows of stones may bereadily constructed by the same method, as shown in Figs. 6 and 7, whichshow a. setting adapted to re.- ceive three such rows. To produce such asetting it is simply necessary to employ a bar of stock of suflicientwidth, and to form therein the requisite number of grooves or channels2, together with the additional in termediate grooves 9, and so thatwhen the necessary cross-cuts have been made there will be, as before,four clamping prongs for each stone, as clearly shown in Fig. 7. It

will be obvious that a setting adapted to rcin;

ceive any desired number of rows of stones may be produced in the samemanner. hen a setting thus adapted to receive several.rows of stones isto be made and the grooves 2 and 9 are to be formed by cutting, it ispreferred, as in the case of making the cross-cuts, to employ a gang ofsaws or other tools comprising the proper number of wide face tools andnarrow face tools to form all of the grooves 2 and 9 simultanegroove andcross-cuts.

ously, although of course these several grooves may be formed separatelyif desired.

With the method above described settings may be produced at much lessexpense than by any method previously employed, While at the same timethe setting itself is superior to the settings heretofore constructed.In addition to the cheapness of production, the method describedpossesses other important and distinctive advantages. such method thelength of the prong is de termined by the depth of the groove 2 and ofthe cross-cuts 6 and 7, and as a result the length of the prongs may bevaried at will by simply varying the depth of such So also settingsadapted to-receive and hold stones of different sizes may be readilyconstructed by simply varying the width of the grooves 2 or of thecross-cuts 7, or both, and if desired the width of the cross-cuts maybevaried in one and the same setting, and so that such single settingmay be adapted to receive stones of varying dimensions measuringlengthwise 0f the setting. As will be seen, all that is necessary inorder to thus vary the width of either the groove 2 or the cross-cuts issimply to select cutting tools of the proper widtho-f face.

As will'be seen, the distance between adj acent stones when set willdepend upon the width ofthe cross-cuts 6, and thus by varying the widthof such cross-cuts the distance between adjacent stones may becorrespond ingly varied. As a thin saw may be employed for making thesecross-cuts 6, such cross-cuts may be made very narrow and so as to bringadjacent stones close together, andif desired practically in contactWith each other. This adds very much to the beauty and appearance of thefinished article.

Thus With' between said grooves projects from the base as prongs.

2. A multiple gem setting comprising a bar of metal having alongitudinally cut I groove on one side and cut cross-grooves ofsubstantially the same depth as and intersecting said groove, wherebythe metal between said grooves projects from the base as prongs.

3. A multiple gem setting comprising a bar of metal having alongitudinally cut between said cut-grooves.

4. In a gem setting a bar of metal having a series of upstanding prongsarranged in pairs along the side edges of said bar, the relativepositions of the prongs upon one side edge corresponding with those uponthe opposite side edge, the corresponding pairs of prongs upon oppositeside edges marking off the face of the bar into sections.

5. In a gem setting a bar of metal having a series of upstanding prongsarranged in pairs along the side ec ges of said bar, the relativepositions of the pairs upon one side edge corresponding with those uponthe opposite side edge, the corresponding pairs of prongs upon oppositeside edges marking off the face of the bar into substantially squaresections.

6. In a gem setting a bar of metal having a series of upstanding prongsarranged in pairs along the side edges of said bar, the

relative positions of the prongs upon one side edge corresponding withthose upon the opposite side edge, the corresponding pairs of prongsupon opposite side edges marking off the face of the bar intosubstantially square sections, each of these sections havmg a conicaldepression in the center thereof for the reception of a gem.

LEWIS MORSE.

WVitnesses W. H. THURSTON, C. G. BRADLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

